All of the above are true
I believe the correct answer from the choices listed above is the last option. All spheres of earth are interrelated or interdependent. This means <span> an impact to one sphere usually affects another one cannot exist without the other. Hope this answers the question. Have a nice day.</span>
Hi there!
To define gravity in a way you can understand, gravity means the force of something acting upon something else to bring it down back to the ground.
For example, gravity is what pulls us to the ground when we jump in the air. You can't just jump in the air and stay in place, right?
Another good example is if there was a spaceship directly in between the Earth and the Moon, it would very very very slowly go toward the earth because of its gravitational pull on the spaceship.
Hope this helps! :D
Remember, just message me if you need anymore help on anything!
Contour lines determine the steepness of the land by how close they are together. Generally, contour lines rise to a particular scale (e.g. a line for every ten metres), therefore, if the contour lines are closer together then the height of that particular area has risen more steeply than if the contour lines are further apart where the steepness has increased more gradually.